Double-dosimetry algorithm for workers in interventional radiology

Clerinx, P.; Buls, Nico; Bosmans, Hilde; Mey, Johan De

doi:10.1093/rpd/ncn148

Cited by 54 publications

(53 citation statements)

References 11 publications

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“…Coefficients a 1 and a 2 according ICRP 60 (Table 3) are well within the range of the reported values. With the exception of one MC based algorithm with a 1 ϭ 1.64 (Clerinx et al 2008), the coefficients are in the range 0.5 Յ a 1 Յ 1.0 and 0.025 Յ a 2 Յ 0.075 for all algorithms (with thyroid shield; ICRP 1991). A Swiss regulation concerning personal dosimetry requires the use of double dosimetry for special working conditions and introduces Table 5.…”

Section: Discussionmentioning

confidence: 99%

“…Routine measurement with two dosimeters was only recommended in one country. At the moment, various double dosimetry algorithms are available based on the effective dose concepts of ICRP 60 (1991) (Clerinx et al 2008;Järvinen et al 2008a and b) and ICRP 103 (2007) (von Boetticher et al 2008). Switzerland was the first European country to include an "official" double dosimetry algorithm for personal monitoring in its national radiation protection regulation (Swiss Ordinance 2008).…”

Section: Introductionmentioning

confidence: 99%

“…In this case, the effect of the energy shift of the radiation spectrum due to the apron is difficult to include. On the other hand, in analyses based on Monte Carlo methods, the assumptions and parameterization are not always explicit, and the setting of the parameters may not fully reflect the situation in radiological practice (Siiskonen et al 2007;Clerinx et al 2008).…”

Section: Introductionmentioning

confidence: 99%

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An Analytic Approach to Double Dosimetry Algorithms in Occupational Dosimetry Using Energy Dependent Organ Dose Conversion Coefficients

Boetticher¹,

Lachmund

Hoffmann³

2010

Health Physics

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Personnel dose in diagnostic radiology is often underestimated. Typically the effective dose E is estimated based on dosimeters worn underneath the protective clothing measuring the personal dose equivalent Hp(10). This one-spot-measurement systematically neglects the exposure to the unshielded organs in the head and neck region. In this paper, energy dependent double dosimetry algorithms in the range of 30-80 keV are derived using organ dose conversion coefficients. The doses of shielded organs are assigned to a single dosimeter in the anterior thoracic region (chest) underneath the apron (Hp,c,u), and the doses of the organs not shielded are assigned to another dosimeter placed on the front area of the neck over the protective garment (Hp,n,o) with E = a1 Hp,c,u(10) + a2 Hp,n,o(10). Organs not completely shielded are categorized correspondingly. The coefficients a1 and a2 increase with higher energies up to 70 keV. The factors a2 are clearly higher according to ICRP 103 (rather than ICRP 60) because ICRP 103 considers additional organs in the head and neck region. According to ICRP 103, a conservative general algorithm with thyroid protection is E = 0.84 Hp,c,u(10) + 0.051 Hp,n,o(10) and without thyroid protection E = 0.79 Hp,c,u(10) + 0.100 Hp,n,o(10).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Analytic Approach to Double Dosimetry Algorithms in Occupational Dosimetry Using Energy Dependent Organ Dose Conversion Coefficients

Boetticher¹,

Lachmund

Hoffmann³

2010

Health Physics

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“…Several investigations [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] revealed that the doses to medical staff in interventional radiology and cardiology may be of concern from a radiation hygiene point of view. Partial-body doses reported ranged from a few microsieverts up to a few millisieverts per procedure, with higher values occurring mainly for the hands.…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, other techniques to determine the real effective dose for medical staff have been recommended, e.g. measurement with two dosimeters [15,17] or calculation on the basis of the dose-area product (DAP) [3,5,6,11].…”

Section: Introductionmentioning

confidence: 99%

Radiation exposure of medical staff from interventional x-ray procedures: a multicentre study

2009

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The purpose of this study was to analyse the radiation exposure of medical staff from interventional x-ray procedures. Partial-body dose measurements were performed with thermoluminescent dosimeters (TLD) in 39 physicians and nine assistants conducting 73 interventional procedures of nine different types in 14 hospitals in Germany. Fluoroscopy time and the dose-area product (DAP) were recorded too. The median (maximum) equivalent body dose per procedure was 16 (2,500) microSv for an unshielded person; the partial-body dose per procedure was 2.8 (240) microSv to the eye lens, 4.1 (730) microSv to the thyroid, 44 (1,800) microSv to one of the feet and 75 (13,000) microSv to one of the hands. A weak correlation between fluoroscopy time or DAP and the mean TLD dose was observed. Generally, the doses were within an acceptable range from a radiation hygiene point of view. However, relatively high exposures were measured to the hand in some cases and could cause a partial-body dose above the annual dose limit of 500 mSv. Thus, the use of finger dosimeters is strongly recommended.

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Recommendations for occupational radiation protection in interventional cardiology

Durán

Hian

Miller

et al. 2013

Cathet Cardio Intervent

115

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The radiation dose received by cardiologists during percutaneous coronary interventions, electrophysiology procedures and other interventional cardiology procedures can vary by more than an order of magnitude for the same type of procedure and for similar patient doses. There is particular concern regarding occupational dose to the lens of the eye. This document provides recommendations for occupational radiation protection for physicians and other staff in the interventional suite. Simple methods for reducing or minimizing occupational radiation dose include: minimizing fluoroscopy time and the number of acquired images; using available patient dose reduction technologies; using good imaging-chain geometry; collimating; avoiding high-scatter areas; using protective shielding; using imaging equipment whose performance is controlled through a quality assurance programme; and wearing personal dosimeters so that you know your dose. Effective use of these methods requires both appropriate education and training in radiation protection for all interventional cardiology personnel, and the availability of appropriate protective tools and equipment. Regular review and investigation of personnel monitoring results, accompanied as appropriate by changes in how procedures are performed and equipment used, will ensure continual improvement in the practice of radiation protection in the interventional suite. These recommendations for occupational radiation protection in interventional cardiology and electrophysiology have been endorsed by the Asian Pacific Society of Interventional Cardiology, the European Association of Percutaneous Cardiovascular Interventions, the Latin American Society of Interventional Cardiology, and the Society for Cardiovascular Angiography and Interventions.

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Double-dosimetry algorithm for workers in interventional radiology

Cited by 54 publications

References 11 publications

An Analytic Approach to Double Dosimetry Algorithms in Occupational Dosimetry Using Energy Dependent Organ Dose Conversion Coefficients

An Analytic Approach to Double Dosimetry Algorithms in Occupational Dosimetry Using Energy Dependent Organ Dose Conversion Coefficients

Radiation exposure of medical staff from interventional x-ray procedures: a multicentre study

Recommendations for occupational radiation protection in interventional cardiology

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